A clink script for supporting tab-completion of git branches when using "git checkout"

git_checkout.lua

function git_checkout_match_generator(text, first, last)
	found_matches = false;
	if rl_state.line_buffer:find("^git checkout ") then
		has_start_branch = not rl_state.line_buffer:find("^git checkout[ ]*$")
		for line in io.popen("git branch 2>nul"):lines() do
			local m = line:match("[%* ] (.+)$")
			
			if m then
				if not has_start_branch then
					clink.add_match(m)
					found_matches = true;
				elseif #text > 0 and m:find(text) then
					clink.add_match(m)
					found_matches = true;
				end
			end
		end
	end

    return found_matches
end

clink.register_match_generator(git_checkout_match_generator, 10)

So the fork from @bhank looks most promising: https://gist.github.com/bhank/a85113b06632fc52f053533f81c2da2d

I was not satisfied with any of the solutions provided here, so I created a own implementation using the parser of clink.

It features better tab completion for example if you have the branches:

private/deva/ISU-124
private/devb/ISU-243

you can type:

git checkout pri<TAB>b<TAB>

which you can't do with the other solutions.

It's still work in progress but here is it: https://gist.github.com/wald-tq/0f274c3dd561dd8f0f7189c65b825f55

enjoy

Thanks for this :-) Works like a charm @sweiss3

And thanks for this addition @glucas

After trying this for a bit, I found that I wanted completion to use any entered text as the beginning the branch name (rather than matching branch names that contain the text anywhere). Changing line 12 works:

                            elseif #text > 0 and m:sub(1, string.len(text)) == text then